Avast! has the best free anti-virus. You can have a lifetime protection for FREE! You have one year free trial and if it expires, you can always uninstall and install again the software. It is automatically updated when you're connected to an internet. All you have to do is install the software and leave it there forever.
Step 1: Download the software from their main site or Click Here.
Step 2: Install the software.
Step 3: Register your Avast using your email address.
Step 4: Enjoy a totally free anti-virus!
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